User information from a terminal is input to a user information inputting section 8, retrieval keys are input to a retrieval key inputting section 7 and retrieval demanding signal is input to a user demand inputting section 6. A content retrieving section 10 searches a database B based upon the retrieval keys and outputs a retrieval result list to a retrieval result list editing section 11. A terminal ability information acquiring section 9 acquires information about processing ability of the terminal from the user information input to the user information inputting section 8 and the retrieval result list editing section 11 edits the retrieval result list from the content retrieving section 10 based upon its processing ability information, and on the other hand, an output content editing section 13 edits the contents based upon the terminal ability information, and then both sections delivers through their delivering sections 12, 14 to the terminal, respectively.